fnResize()
window.onresize = function() {
	fnResize()
}

function fnResize() {
	var deviceWidth = document.documentElement.clientWidth || window.innerWidth
	if (deviceWidth >= 750) {
		deviceWidth = 750
	}
	if (deviceWidth <= 320) {
		deviceWidth = 320
	}
	document.documentElement.style.fontSize = (deviceWidth / 7.5 * 2) + 'px'
}
